#pragma once


// r3xx code-path (MRT)
#define		r2_RT_depth			"$user$depth"			      // MRT
#define		r2_RT_MSAAdepth	"$user$msaadepth"	         // MRT
#define		r2_RT_P				"$user$position"		      // MRT
#define		r2_RT_N				"$user$normal"			      // MRT
#define		r2_RT_albedo		"$user$albedo"			      // MRT

// other
#define		r2_RT_accum			"$user$accum"			// ---	16 bit fp or 16 bit fx
#define		r2_RT_accum_temp	"$user$accum_temp"		// ---	16 bit fp - only for HW which doesn't feature fp16 blend

#define		r2_T_envs0			"$user$env_s0"			// ---
#define		r2_T_envs1			"$user$env_s1"			// ---

#define		r2_T_sky0			"$user$sky0" 
#define		r2_T_sky1			"$user$sky1" 

#define		r2_RT_ssao_temp		"$user$ssao_temp"		//temporary rt for ssao calculation
#define		r2_RT_half_depth	"$user$half_depth"		//temporary rt for ssao calculation

#define		r2_RT_generic0		"$user$generic0"		// ---
#define		r2_RT_generic0_r	"$user$generic0_r"	// ---
#define		r2_RT_generic1		"$user$generic1"		// ---
#define		r2_RT_generic1_r	"$user$generic1_r"	// ---
#define		r2_RT_generic2		"$user$generic2"		// ---	//	Igor: for volumetric lights
#define		r2_RT_generic		"$user$generic"		// ---

#define		r2_RT_bloom1		"$user$bloom1"			// ---
#define		r2_RT_bloom2		"$user$bloom2"			// ---

#define		r2_RT_luminance_t64	"$user$lum_t64"			// --- temp
#define		r2_RT_luminance_t8	"$user$lum_t8"			// --- temp

#define		r2_RT_luminance_src	"$user$tonemap_src"		// --- prev-frame-result
#define		r2_RT_luminance_cur	"$user$tonemap"			// --- result
#define		r2_RT_luminance_pool "$user$luminance"		// --- pool

#define		r2_RT_smap_surf		"$user$smap_surf"		// --- directional
#define		r2_RT_smap_depth	"$user$smap_depth"		// ---directional
#define		r2_RT_smap_depth_minmax	"$user$smap_depth_minmax"	

#define		r2_material			"$user$material"		// ---
#define		r2_ds2_fade			"$user$ds2_fade"		// ---

#define		r2_jitter			"$user$jitter_"			// --- dither
#define		r2_jitter_mipped	"$user$jitter_mipped"			// --- dither
#define		r2_sunmask			"sunmask"

#define		JITTER(a) r2_jitter #a

const		float				SMAP_near_plane		= .1f	;

const		u32					SMAP_adapt_min		= 32	;
const		u32					SMAP_adapt_optimal	= 768	;
const		u32					SMAP_adapt_max		= 1536	;

const		u32					TEX_material_LdotN	= 128	;	// diffuse,		X, almost linear = small res
const		u32					TEX_material_LdotH	= 256	;	// specular,	Y
const		u32					TEX_material_Count	= 4		;	// Number of materials,	Z
const		u32					TEX_jitter			= 64	;
const		u32					TEX_jitter_count	= 5		;	// for HBAO

const		u32					BLOOM_size_X		= 256	;
const		u32					BLOOM_size_Y		= 256	;
const		u32					LUMINANCE_size		= 16	;

// deffer
#define		SE_R2_NORMAL_HQ		0	// high quality/detail
#define		SE_R2_NORMAL_LQ		1	// low quality
#define		SE_R2_SHADOW		2	// shadow generation

// spot
#define		SE_L_FILL			0
#define		SE_L_UNSHADOWED		1
#define		SE_L_NORMAL			2	// typical, scaled
#define		SE_L_FULLSIZE		3	// full texture coverage
#define		SE_L_TRANSLUENT		4	// with opacity/color mask

// mask
#define		SE_MASK_SPOT		0
#define		SE_MASK_POINT		1
#define		SE_MASK_DIRECT		2
#define		SE_MASK_ACCUM_VOL	3
#define		SE_MASK_ACCUM_2D	4
#define		SE_MASK_ALBEDO		5

// sun
#define		SE_SUN_NEAR			0
#define		SE_SUN_FAR			1
#define		SE_SUN_LUMINANCE	2
#define		SE_SUN_NEAR_MINMAX	3
//	For rain R3 rendering
#define		SE_SUN_RAIN_SMAP	3

extern		float	ps_r2_gloss_factor;
IC	float	u_diffuse2s	(float x, float y, float z)	{ float	v = (x+y+z)/3.f;	return ps_r2_gloss_factor * ((v<1)?powf(v,2.f/3.f):v); }
IC	float	u_diffuse2s	(Fvector3& c)				{ return u_diffuse2s(c.x,c.y,c.z);					}

